In mountain biking the rim bead is at the forefront of impact damage and structural crack generation, as well as to damage the pneumatic side.

Our first target was the maximum structural strengthening of this area of the composite, achieved firstly by a special capping, then by widening the bead up to a record 4.2 mm (over 70% wider than the average of MTB rims).

The number of carbon layers in the SWBT bead is considerably wider than the vast majority of commercial carbon composite rims, as the layers compaction during monocoque construction. The unconventional capping lay-up further increases its resistance, assimilating it to a virtual heel of even greater dimensions.

That's why we protected our layering with a non-disclosure NDA, and more.

The width of the bead also increases proportionally the contact area of the edge with the sidewall of the tire eliminating or greatly reducing the risk of tire pinching. This together with the bead rounding drastically reduces the risk of tire cuts and damages.

The torsional stiffness of the rim benefits greatly from the giant SWBT bead.

The strength of the SWBT heel and the lightness of the FEM optimized construction make RaceFactory rims a top product for performance and reliability; the Italian and World Championship titles won by the athletes racing with our wheels demonstrate the correctness of our project.

Innovation, not Imitation.